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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 黃升龍(Sheng-Lung Huang) | |
dc.contributor.author | Jia-Yin Lin | en |
dc.contributor.author | 林家印 | zh_TW |
dc.date.accessioned | 2021-06-12T17:56:02Z | - |
dc.date.available | 2008-02-18 | |
dc.date.copyright | 2008-02-18 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-02-01 | |
dc.identifier.citation | 參考文獻
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27129 | - |
dc.description.abstract | 摻鐿光纖雷射近來以每年功率倍增之趨勢成長,相較於傳統高功率雷射,其在千瓦級以上功率輸出時仍可保持60%光轉換效率與接近繞射極限之光束品質;其他如激發光源為半導體雷射故使用壽命長,增益介質為光纖形態故可輕薄短小且散熱性能佳,以商業角度來說可大幅降低營運維修成本,大有取代傳統高功率雷射在雷射加工、非線性光學與雷射電漿物理上的運用。在雷射性能上,連續輸出、Q開關奈秒級脈衝或鎖模飛秒級脈衝之光纖雷射及其光纖功率放大器之技術發展已逐漸成熟。未來的挑戰為單模十千瓦級與單頻線極化之連續輸出以及百毫焦耳級脈衝能量與千瓦級平均功率之脈衝輸出。
在本論文中,作為初步的研究,我們成功地以入射功率20 W、波長915 nm光纖耦合半導體雷射來端面激發摻鐿光纖,成功產生波長1064 nm且連續功率9 W之雷射,並與模擬結果在雷射斜率效率、激發閥值與中心波長上得到良好驗證,並分析其端面耦光效率之最佳化、摻鐿光纖吸收量測。 | zh_TW |
dc.description.abstract | Recently, with the rapid growth of Yb-fiber laser powers, the great advantages of Yb-fiber lasers over the conventional high-power lasers are the possibility of achieving extremely high conversion efficiency of 60% at kW outputs, and yet maintaining high beam quality close to the diffraction limit. The particular features of Yb-fiber lasers, including with laser diode as the excitation (i.e. longer lifetime, low cost) and with fiber form as the gain medium (i.e. compact) , is of major significance for the replacement of the conventional high-power lasers in applications of laser machining, non-linear optics and laser plasma. For the other fiber laser applications, such as CW output, Q-switched with ns pulse duration, mode-locked with fs pulse duration and fiber amplifiers, become mature recently. Further efforts need to be devoted to achieve single-mode 10-kW, CW linear polarization, 100 mJ of pulse energy and kW level of average power.
We have initially established Yb-fiber laser by using pump source with 915 nm of wavelength and 20 W of incident power, and successfully produced 9 W of lasing power with 1064 nm of wavelength in this thesis. The experimental results are verified by simulation in slope efficiency, threshold, and central wavelength. Moreover, we have also analyzed optimal efficiency in coupling power and measured the absorption coefficient of Yb fiber. | en |
dc.description.provenance | Made available in DSpace on 2021-06-12T17:56:02Z (GMT). No. of bitstreams: 1 ntu-97-J94941023-1.pdf: 3804892 bytes, checksum: 2afc257361074ccb4bdcc1fca5d622a8 (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 論文目錄
口試委員會審定書 i 誌謝 ..ii 摘要 iv 英文摘要 v 目錄 vi 圖目錄 vii 表目錄 x 第一章 光纖雷射之介紹 1 1.1雙纖衣光纖與掺雜離子之特性 1 1.2掺鐿光纖雷射與其他高功率雷射之比較 5 1.3高功率掺鐿光纖雷射之種類、應用與挑戰 8 1.4 論文架構 17 第二章 摻鐿光纖雷射工作原理 18 2.1幫浦光源耦合與光纖波導原理 18 2.2光纖雷射原理與鐿離子之吸收與放射特性 25 第三章 實驗量測與模擬方法 30 3.1端面耦合系統之光學設計與實驗量測 30 3.2光纖雷射之模擬方法 38 第四章 實驗與模擬結果之討論 42 第五章 結論與未來工作 59 參考文獻 60 圖目錄 圖1.1上圖與下圖分別為雙纖衣與單纖衣之示意圖 2 圖1.2掺鐿光纖雷射單級最高連續輸出功率之歷史進展圖 8 圖1.3千瓦等級連續輸出功率掺鐿光纖雷射之代表性架構圖[21] 9 圖1.4 Q開關摻鐿光纖主振盪功率放大器之架構示意圖[24] 10 圖1.5百瓦級的平均功率及100 | |
dc.language.iso | zh-TW | |
dc.title | 高功率掺鐿光纖雷射之研究 | zh_TW |
dc.title | The Study of High Power Ytterbium-doped Fiber Laser | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 孔慶昌(Andy Kung),賴?杰(Yin-Chieh Lai),黃鼎偉(Ding-Wei Huang),羅家堯(Chia-Yao Lo) | |
dc.subject.keyword | 光纖雷射,摻鐿光纖雷射, | zh_TW |
dc.subject.keyword | Fiber Laser,Ytterbium Doped Fiber Laser, | en |
dc.relation.page | 63 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-02-01 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
顯示於系所單位: | 光電工程學研究所 |
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